Add contributors to CHANGES file

git-svn-id: https://klish.googlecode.com/svn/trunk@474 0eaa4687-2ee9-07dd-09d9-bcdd2d2dd5fb

CHANGES

@@ -8,6 +8,11 @@ of Newport Networks. (http://www.newport-networks.com)
 
     Serj Kalichev
 
+\section _1_5_0 1.5.0
+Thanks to the contributors:
+- Michal Turek
+- Camilo A. Arboleda, Cybercom
+
 \section _1_2_1 1.2.1
 
 \section _1_2_0 1.2.0